RE: PRIMER QUESTION
Some of us have different ideas on this subject. By going to a tight sabot I believe that it will hold its place long enough that the powder burns correctly, when you can shoot a considerable number of different bullets of several brands consistantly into groups under 2 inches at 100 yds and the best of the lot will go into a group less than an inch some times when conditions and your shooting are both good then there just can not be to much wrong!
Lee